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ILCE-7M3, ILCE-7M4, FX3 get iso, f-number, shutterspeed range error #1073

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xujinbook opened this issue Jan 8, 2025 · 4 comments
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@xujinbook
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Describe the bug

    The issue we are currently encountering is the inaccurate retrieval of adjustable parameters (ISO, Iris, Shutter Speed) on Sony cameras.
            
            Description of inaccurate ISO retrieval:
                     We conducted the tests using the A7M3 in manual mode. The ISO range displayed by the A7M3 does not match the range obtained via gphoto2, as shown below:
                             A7M3 displayed ISO range:
                                    AUTO 50 60 64 80 100 125 160 200 250 320 400 500 640 800 1000 1250
                                    1600   2000  2500  3200  4000 5000 6400 8000 10000  12800  16000  
                                    20000 25600  32000  40000 51200  64000 80000   102400  128000 
                                    160000  204800
                             Gpohto2 displayed ISO range:
                                    AUTO 50 60 64 80 100 125 160 200 250 320 400 500 640 800 1000 1250
                                    1600   2000  2500  3200  4000 5000 6400 8000 10000  12800  16000  
                                    20000 25600  32000  40000 51200  64000 80000   102400  128000 
                                    160000  204800  256000 320000 409600
                              We have found that the range obtained using gphoto2 is broader than the actual range displayed by the A7M3. We hope to obtain a range that is consistent with
                              what is  shown on the A7M3. (The command used is gphoto2 --get-config iso.)

             Description of inaccurate F-Number retrieval:                         
                     We observed that the aperture values displayed by the A7M3 differ at various focal lengths, but the range of aperture values obtained using gphoto2 remains unchanged.
                              The A7M3 supports f-number values from f/3.5 to f/32 when using a lens with a focal length of 28mm;
                              The A7M3 supports f-number values from f/5.6 to f/36 when using a lens with a focal length of 70mm;
                            
                              However, the f-number values obtained using gphoto2 do not change with different focal lengths and always display a range of f/1 to f/64. 
                              (The command used is gphoto2 --get-config f-number.)

              Description of inaccurate ShutterSpeed retrieval:   
                      Similar to ISO and F-Number, the range of ShutterSpeed obtained using gphoto2 is broader than the range supported by the A7M3.

             We urgently need your valuable advice to obtain the correct parameter ranges. Thank you in advance for Sony's assistance.

Name the camera
ILCE-7M3, ILCE-7M4, FX3

libgphoto2 and gphoto2 version
output of: the lastest master branch

To Reproduce
Steps to reproduce the behavior:

When reproducing with the commandline tool, attach debugout using --debug --debug-logfile=debug.log if considered useful.

@jufa
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jufa commented Jan 9, 2025

possibly related to #1067

@nicustraton

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@xujinbook
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I can not get correct iso f-number shutterspeed by lastest commit

@xujinbook
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xujinbook commented Jan 14, 2025

更新了这笔提交后,我们用 gphoto2 命令行(gphoto2 --get-config cmd) 获取的iso/f-number/shutterspeed范围值仍然不正确。 我们希望能够通过 gphoto2 获取的 iso,f-number,shutterspeed 范围以及枚举的形式展示出来,并且展示出来的值能够与相机(Sony ILCE-7M3, ILCE-7M4, FX3等)中实际参数范围值保持一致; @jufa @rheimbuch @nicustraton

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